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x86/mce/intel: Use MCG_BANKCNT_MASK instead of 0xff

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Use the predefined MCG_BANKCNT_MASK macro instead of the hardcoded
0xff to mask the bank number bits.

No functional changes intended.

Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20241025024602.24318-3-qiuxu.zhuo@intel.com
This commit is contained in:
Qiuxu Zhuo 2024-10-25 10:45:54 +08:00 committed by Borislav Petkov (AMD)
parent 325c3376af
commit 754269ccf0
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/mce/intel.c
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@ -94,7 +94,7 @@ static int cmci_supported(int *banks)
if (!boot_cpu_has(X86_FEATURE_APIC) || lapic_get_maxlvt() < 6)
return 0;
rdmsrl(MSR_IA32_MCG_CAP, cap);
*banks = min_t(unsigned, MAX_NR_BANKS, cap & 0xff);
*banks = min_t(unsigned, MAX_NR_BANKS, cap & MCG_BANKCNT_MASK);
return !!(cap & MCG_CMCI_P);
}